LMP7300 Datasheet | National Semiconductor

.. September 2007 LMP7300 Micropower Precision parator and Precision Reference with Adjustable Hysteresis LMP7300 Micropower Precision parator and Precision Reference with Adjustable Hysteresis General Description The LMP7300 is a bination parator and reference with ideal specifications for precision threshold detecting. The precision 2.048V reference es with a 0.25% maximum error. The parator Features micopower (35 µW), low offset voltage (.75 m V max), and independent adjustable positive and negative hysteresis. Hysteresis control for the parator is acplished through two external pins. The HYSTP pin sets the positive hysteresis and the HYSTN pin sets the negative hysteresis. The parator design isolates the VIN source impedance and the programmable hysteresis ponents. This isolation prevents any undesirable interaction allowing the IC to maintain a precise threshold voltage during level detection. The bination of low offset voltage, external hysteresis control, and precision voltage reference provides an easy to use micropower precision threshold detector. The LMP7300 open collector output makes it ideal for mixed voltage system designs. The output voltage upper rail is unconstrained by VCC and can be pulled above VCC to a maximum of 12V. The LMP7300 is a member of the LMP® precision amplifier family. Features (For VS = 5V, typical unless otherwise noted) 13 μA - Supply current 4 μs - Propagation delay 0.3 m V - Input offset voltage 100 d B - CMRR 100 d B - PSRR - Positive and negative hysteresis control 1 m V/m V - Adjustable hysteresis 2.048V - Reference voltage 0.25% - Reference voltage accuracy 1 m A - Reference voltage source current 2.7V to 12V - Wide supply voltage range - Operating temperature range ambient - 40°C to 125°C Applications - - - - Precision threshold detection Battery monitoring Battery management systems Zero crossing detectors Typical Application Micropower Precision Battery Low Voltage...